Inbound Debate #19 – Measuring Success with (not provided)

Google introduced (not provided) keyword data amid ‘privacy concerns’. It meant that all users who were logged in to a Google account would have their organic search keywords appear as (not provided) in Google Analytics. Since then, more people have created Google accounts and more data was hidden by (not provided); so how do search and inbound marketers measure success amid a growing lack of data and what metrics can be looked at instead?